The phrase 'it posed challenges' is correct and can be used in written English.
The phrase is often used to refer to situations that created difficulty or obstacles. For example: The global pandemic posed challenges for healthcare workers as they had to adapt to changing protocols.
It poses challenges for good governance but is at the same time a source of great strength.
Though it poses challenges to strict vegetarians, the latest research shows quite definitively that protein spurs even more of an insulin response than do exercise and carbohydrates alone.
And it poses challenges if astronauts are ever sent to Mars, where the days are a little more than 24 1/2 hours.
But while they welcome this support from organized labor — and given the challenges in getting voters to turn out at the polls here, they need it — it poses challenges for them, as well.
It is incredibly convenient for developers trying to move more quickly, but it poses challenges for the operations team trying to manage and monitor the application.
At the same time distribution brings benefits, it poses challenges as the difficulty to develop trust, which is essential for team efficiency.
For regulators, it poses challenges to properly ensure these complex devices are safe and effective for patients by creating new regulatory frameworks.
It poses challenges for U.S. foreign relations; the Obama administration has been more hesitant while Hillary Clinton and former president Bill Clinton have been involved in supporting Kagame's efforts for years through the Clinton Global Initiative.
The flip side of all the wonderful variety San Francisco offers is that it poses challenges for those of us who are working at maintaining a healthy lifestyle.
While the opportunity at hand seems vast, it poses challenges as it calls for the development of new sets of skills and approaches so we could harness it in an optimal and sustainable way.
